In mild heart disease, it does not cause the patient to develop a cough. However, in severe heart disease, such as coronary artery disease combined with malignant arrhythmias caused by various factors, especially when combined with heart failure, in severe patients with left heart failure, or total heart failure, patients will have varying degrees of pulmonary stasis. In pulmonary stasis, patients will have a series of clinical symptoms and reactions such as coughing, coughing up sputum, coughing up pink frothy sputum, and sitting up and breathing. Patients will also have a series of clinical symptoms such as inability to lie down, decreased activity tolerance, accompanied by dyspnea, shortness of breath, etc. Therefore, if the patient has a clear previous history of heart disease, accompanied by obvious cough, accompanied by dyspnea, or even inability to lie down at night and sit up and breathe. In this case, we must consider that the left heart failure combined with heart disease aggravation, or combined with severe total heart failure, will have this symptom, to carry out rapid medical consultation.